anterior cranial fossa


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to anterior cranial fossa: Posterior cranial fossa, Middle cranial fossa

an·te·ri·or cra·ni·al fos·sa

[TA]
the portion of the internal base of the skull, anterior to the sphenoidal ridges and limbus, in which the frontal lobes of the brain rest.

anterior cranial fossa

The anteriormost of the three divisions of the internal cranial base, which houses the inferior face of the frontal lobes of the brain. The floor of the fossa is covered by dura mater and is formed by contributions from the frontal, ethmoid and sphenoid bones. The anterior cranial fossa is limited anteriorly and laterally by the frontal bone.

anterior cranial fossa

The anterior one-third of the floor of the cranial cavity; the fossa is formed from the orbital part of the frontal bones, the cribriform plates of the ethmoid bone, and one third of the anterior sphenoid bones (the anterior body and lesser wings). The olfactory lobes and the inferior surfaces of the cerebral hemispheres lie in this fossa.
See also: fossa

an·te·ri·or cra·ni·al fos·sa

(an-tērē-ŏr krānē-ăl fosă) [TA]
Portion of internal base of skull, anterior to the sphenoidal ridges and limbus, in which cerebral frontal lobes rest.
References in periodicals archive ?
Surgical management of an unruptured dural arteriovenous fistula of the anterior cranial fossa: natural history for 7 years.
(3-6) Extension of these tumors may lead into the anterior cranial fossa through the cribriform plate.
Periosteum of anterior cranial fossa is stripped out except over the cribriform plate of ethmoid bone.
CT of the orbits detected the presence of a mass that extended from the right ethmoid sinuses into the orbital apex, anterior cranial fossa, right frontal lobe, and sphenoid sinus (figure 2).
Enhanced magnetic resonance imaging (MRI) revealed a well defined extra axial solid mass lesion in the anterior cranial fossa about 27x23x26mm causing mass effect over the optic chiasma and also with extension into the right optic canal.
Areview of his original computed tomography (CT) scan (figure) revealed the presence of a large, destructive lesion that involved the sinonasal area and extended into the anterior cranial fossa, a significant degree of associated vasogenic edema in the adjacent frontal lobes of the brain, and signs of hemorrhage.
Applying excessive force to the middle turbinate can cause a fracture to the floor of the anterior cranial fossa and result in cerebrospinal fluid leak.
(6,9) They primarily involve the maxillary and ethmoid sinuses, and they extend locally to involve the orbit, cheek, and anterior cranial fossa. They generally contain a monomorphic population of large atypical lymphoid cells without a prominent mixture of reactive cells.
The mass extended into the right orbit and anterior cranial fossa.
T1-weighted, contrast-enhanced magnetic resonance imaging (MRI) found no destructive invasion of the periorbital tissue or of the dura in the anterior cranial fossa (figure 2).
High-resolution CT and magnetic resonance imaging can be used as complementary investigations to precisely delineate the extent of the tumor and to define the involvement of the cribriform plate, anterior cranial fossa, and retromaxillary space.
In cases where the lesion breaches the cranial vault, the extent of involvement usually remains extramural and is limited to the anterior cranial fossa. The clinical presentation depends on the site of origin and the extent of local disease.

Medical browser ?
Full browser ?